<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        /* 左箭头的阴影 */
         .div1{
             width: 30px;
             height: 40px;
             border-top-right-radius: 20px;
             border-bottom-right-radius: 20px;
             border: 1px solid black;
             background-color: gray;

             position: absolute;
             left: 0;
             top: 50%;
             margin-top:-15px; 
         }
         /*左箭头  */
         p{
             display: inline;
             height: 40px;
             line-height: 40px;
             text-align: center;
             color: white;
         }
         /* 小圆圈 */
         .div2{
             width: 10px;
             height: 10px;
             border-top-right-radius: 20px;
             border-bottom-right-radius:20px;
             border-top-left-radius: 20px; 
             border-bottom-left-radius: 20px;
             border: 1px solid black;
             background-color: white;

             position: absolute;
             bottom: 0;
             left: 50%;

         }
         .picture{
             width: 520px;
             height: 280px;
             position: relative;
             border: 1px solid red;
         }
    </style>
</head>
<body>
        <div class="picture">
            <img src="image/taobao.jpg" alt="">

            <div class="div1">
                    <p><</p>
            </div>

            <div class="div2"></div>
        </div>
  
   
</body>
</html>